Refactor to use new handler setup
diff --git a/openstack/db/v1/instances/requests_test.go b/openstack/db/v1/instances/requests_test.go
index bdda1f6..d44220d 100644
--- a/openstack/db/v1/instances/requests_test.go
+++ b/openstack/db/v1/instances/requests_test.go
@@ -3,41 +3,26 @@
 import (
 	"testing"
 
-	"github.com/rackspace/gophercloud"
 	db "github.com/rackspace/gophercloud/openstack/db/v1/databases"
 	"github.com/rackspace/gophercloud/openstack/db/v1/users"
 	"github.com/rackspace/gophercloud/pagination"
 	th "github.com/rackspace/gophercloud/testhelper"
 	fake "github.com/rackspace/gophercloud/testhelper/client"
+	"github.com/rackspace/gophercloud/testhelper/fixture"
 )
 
-var instanceID = "d4603f69-ec7e-4e9b-803f-600b9205576f"
-
-var expectedInstance = &Instance{
-	Created: "2014-02-13T21:47:13",
-	Updated: "2014-02-13T21:47:13",
-	Flavor: Flavor{
-		ID: "1",
-		Links: []gophercloud.Link{
-			gophercloud.Link{Href: "https://my-openstack.com/v1.0/1234/flavors/1", Rel: "self"},
-			gophercloud.Link{Href: "https://my-openstack.com/v1.0/1234/flavors/1", Rel: "bookmark"},
-		},
-	},
-	Hostname: "e09ad9a3f73309469cf1f43d11e79549caf9acf2.my-openstack.com",
-	ID:       instanceID,
-	Links: []gophercloud.Link{
-		gophercloud.Link{Href: "https://my-openstack.com/v1.0/1234/instances/1", Rel: "self"},
-	},
-	Name:   "json_rack_instance",
-	Status: "BUILD",
-	Volume: Volume{Size: 2},
-}
+var (
+	instanceID = "{instanceID}"
+	rootURL    = "/instances"
+	resURL     = rootURL + "/" + instanceID
+	uRootURL   = resURL + "/root"
+	aURL       = resURL + "/action"
+)
 
 func TestCreate(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleCreateInstanceSuccessfully(t)
+	fixture.SetupHandler(t, rootURL, "POST", createReq, createResp, 200)
 
 	opts := CreateOpts{
 		Name:      "json_rack_instance",
@@ -61,31 +46,13 @@
 	instance, err := Create(fake.ServiceClient(), opts).Extract()
 
 	th.AssertNoErr(t, err)
-	th.AssertDeepEquals(t, expectedInstance, instance)
+	th.AssertDeepEquals(t, &expectedInstance, instance)
 }
 
 func TestInstanceList(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleListInstanceSuccessfully(t)
-
-	expectedInstance := Instance{
-		Flavor: Flavor{
-			ID: "1",
-			Links: []gophercloud.Link{
-				gophercloud.Link{Href: "https://openstack.example.com/v1.0/1234/flavors/1", Rel: "self"},
-				gophercloud.Link{Href: "https://openstack.example.com/flavors/1", Rel: "bookmark"},
-			},
-		},
-		ID: "8fb081af-f237-44f5-80cc-b46be1840ca9",
-		Links: []gophercloud.Link{
-			gophercloud.Link{Href: "https://openstack.example.com/v1.0/1234/instances/8fb081af-f237-44f5-80cc-b46be1840ca9", Rel: "self"},
-		},
-		Name:   "xml_rack_instance",
-		Status: "ACTIVE",
-		Volume: Volume{Size: 2},
-	}
+	fixture.SetupHandler(t, rootURL, "GET", "", listInstancesResp, 200)
 
 	pages := 0
 	err := List(fake.ServiceClient()).EachPage(func(page pagination.Page) (bool, error) {
@@ -96,38 +63,30 @@
 			return false, err
 		}
 
-		if len(actual) != 1 {
-			t.Fatalf("Expected 1 DB instance, got %d", len(actual))
-		}
-		th.CheckDeepEquals(t, expectedInstance, actual[0])
+		th.CheckDeepEquals(t, []Instance{expectedInstance}, actual)
 
 		return true, nil
 	})
 
 	th.AssertNoErr(t, err)
-
-	if pages != 1 {
-		t.Errorf("Expected 1 page, saw %d", pages)
-	}
+	th.AssertEquals(t, 1, pages)
 }
 
 func TestGetInstance(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleGetInstanceSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, resURL, "GET", "", getInstanceResp, 200)
 
 	instance, err := Get(fake.ServiceClient(), instanceID).Extract()
 
 	th.AssertNoErr(t, err)
-	th.AssertDeepEquals(t, instance, expectedInstance)
+	th.AssertDeepEquals(t, &expectedInstance, instance)
 }
 
 func TestDeleteInstance(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleDeleteInstanceSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, resURL, "DELETE", "", "", 202)
 
 	res := Delete(fake.ServiceClient(), instanceID)
 	th.AssertNoErr(t, res.Err)
@@ -136,12 +95,11 @@
 func TestEnableRootUser(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleEnableRootUserSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, uRootURL, "POST", "", enableUserResp, 200)
 
 	expected := &users.User{Name: "root", Password: "secretsecret"}
-
 	user, err := EnableRootUser(fake.ServiceClient(), instanceID).Extract()
+
 	th.AssertNoErr(t, err)
 	th.AssertDeepEquals(t, expected, user)
 }
@@ -149,8 +107,7 @@
 func TestIsRootEnabled(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleIsRootEnabledSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, uRootURL, "GET", "", isUserEnabledResp, 200)
 
 	isEnabled, err := IsRootEnabled(fake.ServiceClient(), instanceID)
 
@@ -161,32 +118,26 @@
 func TestRestartService(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleRestartSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, aURL, "POST", restartReq, "", 202)
 
 	res := RestartService(fake.ServiceClient(), instanceID)
-
 	th.AssertNoErr(t, res.Err)
 }
 
 func TestResizeInstance(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleResizeInstanceSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, aURL, "POST", resizeReq, "", 202)
 
 	res := ResizeInstance(fake.ServiceClient(), instanceID, "2")
-
 	th.AssertNoErr(t, res.Err)
 }
 
 func TestResizeVolume(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
-
-	HandleResizeVolSuccessfully(t, instanceID)
+	fixture.SetupHandler(t, aURL, "POST", resizeVolReq, "", 202)
 
 	res := ResizeVolume(fake.ServiceClient(), instanceID, 4)
-
 	th.AssertNoErr(t, res.Err)
 }